/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: WHY
 * Date: 2023-03-08
 * Time: 21:45
 */

class MyThread extends Thread {
    @Override
    public void run() {
        while (true) {
            System.out.println("hello t");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
public class Test {
    public static void main(String[] args) {
        Thread t = new MyThread();
        // start 会创建新的线程
        t.start();
        // run 不会创建新的线程. run 是在 main 线程中执行的~~
        // t.run();

        while (true) {
            System.out.println("hello main");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    }

